2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
6 * Copyright (c) 2008-2009 VMware, Inc.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 * \file texfetch_tmp.h
29 * Texel fetch functions template.
31 * This template file is used by texfetch.c to generate texel fetch functions
32 * for 1-D, 2-D and 3-D texture images.
34 * It should be expanded by defining \p DIM as the number texture dimensions
35 * (1, 2 or 3). According to the value of \p DIM a series of macros is defined
36 * for the texel lookup in the gl_texture_image::Data.
38 * \author Gareth Hughes
45 #define TEXEL_ADDR( type, image, i, j, k, size ) \
46 ((void) (j), (void) (k), ((type *)(image)->Map + (i) * (size)))
48 #define FETCH(x) fetch_texel_1d_##x
52 #define TEXEL_ADDR( type, image, i, j, k, size ) \
54 ((type *)(image)->Map + ((image)->RowStride * (j) + (i)) * (size)))
56 #define FETCH(x) fetch_texel_2d_##x
60 #define TEXEL_ADDR( type, image, i, j, k, size ) \
61 ((type *)(image)->Map + ((image)->ImageOffsets[k] \
62 + (image)->RowStride * (j) + (i)) * (size))
64 #define FETCH(x) fetch_texel_3d_##x
67 #error illegal number of texture dimensions
71 /* MESA_FORMAT_Z32 ***********************************************************/
73 /* Fetch depth texel from 1D, 2D or 3D 32-bit depth texture,
74 * returning 1 GLfloat.
75 * Note: no GLchan version of this function.
77 static void FETCH(f_z32)( const struct swrast_texture_image *texImage,
78 GLint i, GLint j, GLint k, GLfloat *texel )
80 const GLuint *src = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
81 texel[0] = src[0] * (1.0F / 0xffffffff);
85 /* MESA_FORMAT_Z16 ***********************************************************/
87 /* Fetch depth texel from 1D, 2D or 3D 16-bit depth texture,
88 * returning 1 GLfloat.
89 * Note: no GLchan version of this function.
91 static void FETCH(f_z16)(const struct swrast_texture_image *texImage,
92 GLint i, GLint j, GLint k, GLfloat *texel )
94 const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
95 texel[0] = src[0] * (1.0F / 65535.0F);
100 /* MESA_FORMAT_RGBA_F32 ******************************************************/
102 /* Fetch texel from 1D, 2D or 3D RGBA_FLOAT32 texture, returning 4 GLfloats.
104 static void FETCH(f_rgba_f32)( const struct swrast_texture_image *texImage,
105 GLint i, GLint j, GLint k, GLfloat *texel )
107 const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 4);
108 texel[RCOMP] = src[0];
109 texel[GCOMP] = src[1];
110 texel[BCOMP] = src[2];
111 texel[ACOMP] = src[3];
117 /* MESA_FORMAT_RGBA_F16 ******************************************************/
119 /* Fetch texel from 1D, 2D or 3D RGBA_FLOAT16 texture,
120 * returning 4 GLfloats.
122 static void FETCH(f_rgba_f16)( const struct swrast_texture_image *texImage,
123 GLint i, GLint j, GLint k, GLfloat *texel )
125 const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 4);
126 texel[RCOMP] = _mesa_half_to_float(src[0]);
127 texel[GCOMP] = _mesa_half_to_float(src[1]);
128 texel[BCOMP] = _mesa_half_to_float(src[2]);
129 texel[ACOMP] = _mesa_half_to_float(src[3]);
134 /* MESA_FORMAT_RGB_F32 *******************************************************/
136 /* Fetch texel from 1D, 2D or 3D RGB_FLOAT32 texture,
137 * returning 4 GLfloats.
139 static void FETCH(f_rgb_f32)( const struct swrast_texture_image *texImage,
140 GLint i, GLint j, GLint k, GLfloat *texel )
142 const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 3);
143 texel[RCOMP] = src[0];
144 texel[GCOMP] = src[1];
145 texel[BCOMP] = src[2];
152 /* MESA_FORMAT_RGB_F16 *******************************************************/
154 /* Fetch texel from 1D, 2D or 3D RGB_FLOAT16 texture,
155 * returning 4 GLfloats.
157 static void FETCH(f_rgb_f16)( const struct swrast_texture_image *texImage,
158 GLint i, GLint j, GLint k, GLfloat *texel )
160 const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 3);
161 texel[RCOMP] = _mesa_half_to_float(src[0]);
162 texel[GCOMP] = _mesa_half_to_float(src[1]);
163 texel[BCOMP] = _mesa_half_to_float(src[2]);
170 /* MESA_FORMAT_ALPHA_F32 *****************************************************/
172 /* Fetch texel from 1D, 2D or 3D ALPHA_FLOAT32 texture,
173 * returning 4 GLfloats.
175 static void FETCH(f_alpha_f32)( const struct swrast_texture_image *texImage,
176 GLint i, GLint j, GLint k, GLfloat *texel )
178 const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1);
182 texel[ACOMP] = src[0];
188 /* MESA_FORMAT_ALPHA_F32 *****************************************************/
190 /* Fetch texel from 1D, 2D or 3D ALPHA_FLOAT16 texture,
191 * returning 4 GLfloats.
193 static void FETCH(f_alpha_f16)( const struct swrast_texture_image *texImage,
194 GLint i, GLint j, GLint k, GLfloat *texel )
196 const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);
200 texel[ACOMP] = _mesa_half_to_float(src[0]);
206 /* MESA_FORMAT_LUMINANCE_F32 *************************************************/
208 /* Fetch texel from 1D, 2D or 3D LUMINANCE_FLOAT32 texture,
209 * returning 4 GLfloats.
211 static void FETCH(f_luminance_f32)( const struct swrast_texture_image *texImage,
212 GLint i, GLint j, GLint k, GLfloat *texel )
214 const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1);
217 texel[BCOMP] = src[0];
224 /* MESA_FORMAT_LUMINANCE_F16 *************************************************/
226 /* Fetch texel from 1D, 2D or 3D LUMINANCE_FLOAT16 texture,
227 * returning 4 GLfloats.
229 static void FETCH(f_luminance_f16)( const struct swrast_texture_image *texImage,
230 GLint i, GLint j, GLint k, GLfloat *texel )
232 const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);
235 texel[BCOMP] = _mesa_half_to_float(src[0]);
242 /* MESA_FORMAT_LUMINANCE_ALPHA_F32 *******************************************/
244 /* Fetch texel from 1D, 2D or 3D LUMINANCE_ALPHA_FLOAT32 texture,
245 * returning 4 GLfloats.
247 static void FETCH(f_luminance_alpha_f32)( const struct swrast_texture_image *texImage,
248 GLint i, GLint j, GLint k, GLfloat *texel )
250 const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 2);
253 texel[BCOMP] = src[0];
254 texel[ACOMP] = src[1];
260 /* MESA_FORMAT_LUMINANCE_ALPHA_F16 *******************************************/
262 /* Fetch texel from 1D, 2D or 3D LUMINANCE_ALPHA_FLOAT16 texture,
263 * returning 4 GLfloats.
265 static void FETCH(f_luminance_alpha_f16)( const struct swrast_texture_image *texImage,
266 GLint i, GLint j, GLint k, GLfloat *texel )
268 const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 2);
271 texel[BCOMP] = _mesa_half_to_float(src[0]);
272 texel[ACOMP] = _mesa_half_to_float(src[1]);
278 /* MESA_FORMAT_INTENSITY_F32 *************************************************/
280 /* Fetch texel from 1D, 2D or 3D INTENSITY_FLOAT32 texture,
281 * returning 4 GLfloats.
283 static void FETCH(f_intensity_f32)( const struct swrast_texture_image *texImage,
284 GLint i, GLint j, GLint k, GLfloat *texel )
286 const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1);
290 texel[ACOMP] = src[0];
296 /* MESA_FORMAT_INTENSITY_F16 *************************************************/
298 /* Fetch texel from 1D, 2D or 3D INTENSITY_FLOAT16 texture,
299 * returning 4 GLfloats.
301 static void FETCH(f_intensity_f16)( const struct swrast_texture_image *texImage,
302 GLint i, GLint j, GLint k, GLfloat *texel )
304 const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);
308 texel[ACOMP] = _mesa_half_to_float(src[0]);
314 /* MESA_FORMAT_R_FLOAT32 *****************************************************/
316 /* Fetch texel from 1D, 2D or 3D R_FLOAT32 texture,
317 * returning 4 GLfloats.
319 static void FETCH(f_r_f32)( const struct swrast_texture_image *texImage,
320 GLint i, GLint j, GLint k, GLfloat *texel )
322 const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1);
323 texel[RCOMP] = src[0];
332 /* MESA_FORMAT_R_FLOAT16 *****************************************************/
334 /* Fetch texel from 1D, 2D or 3D R_FLOAT16 texture,
335 * returning 4 GLfloats.
337 static void FETCH(f_r_f16)( const struct swrast_texture_image *texImage,
338 GLint i, GLint j, GLint k, GLfloat *texel )
340 const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);
341 texel[RCOMP] = _mesa_half_to_float(src[0]);
350 /* MESA_FORMAT_RG_FLOAT32 ****************************************************/
352 /* Fetch texel from 1D, 2D or 3D RG_FLOAT32 texture,
353 * returning 4 GLfloats.
355 static void FETCH(f_rg_f32)( const struct swrast_texture_image *texImage,
356 GLint i, GLint j, GLint k, GLfloat *texel )
358 const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 2);
359 texel[RCOMP] = src[0];
360 texel[GCOMP] = src[1];
368 /* MESA_FORMAT_RG_FLOAT16 ****************************************************/
370 /* Fetch texel from 1D, 2D or 3D RG_FLOAT16 texture,
371 * returning 4 GLfloats.
373 static void FETCH(f_rg_f16)( const struct swrast_texture_image *texImage,
374 GLint i, GLint j, GLint k, GLfloat *texel )
376 const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 2);
377 texel[RCOMP] = _mesa_half_to_float(src[0]);
378 texel[GCOMP] = _mesa_half_to_float(src[1]);
387 * Begin Hardware formats
390 /* MESA_FORMAT_RGBA8888 ******************************************************/
392 /* Fetch texel from 1D, 2D or 3D rgba8888 texture, return 4 GLfloats */
393 static void FETCH(f_rgba8888)( const struct swrast_texture_image *texImage,
394 GLint i, GLint j, GLint k, GLfloat *texel )
396 const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
397 texel[RCOMP] = UBYTE_TO_FLOAT( (s >> 24) );
398 texel[GCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );
399 texel[BCOMP] = UBYTE_TO_FLOAT( (s >> 8) & 0xff );
400 texel[ACOMP] = UBYTE_TO_FLOAT( (s ) & 0xff );
408 /* MESA_FORMAT_RGBA888_REV ***************************************************/
410 /* Fetch texel from 1D, 2D or 3D abgr8888 texture, return 4 GLchans */
411 static void FETCH(f_rgba8888_rev)( const struct swrast_texture_image *texImage,
412 GLint i, GLint j, GLint k, GLfloat *texel )
414 const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
415 texel[RCOMP] = UBYTE_TO_FLOAT( (s ) & 0xff );
416 texel[GCOMP] = UBYTE_TO_FLOAT( (s >> 8) & 0xff );
417 texel[BCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );
418 texel[ACOMP] = UBYTE_TO_FLOAT( (s >> 24) );
424 /* MESA_FORMAT_ARGB8888 ******************************************************/
426 /* Fetch texel from 1D, 2D or 3D argb8888 texture, return 4 GLchans */
427 static void FETCH(f_argb8888)( const struct swrast_texture_image *texImage,
428 GLint i, GLint j, GLint k, GLfloat *texel )
430 const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
431 texel[RCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );
432 texel[GCOMP] = UBYTE_TO_FLOAT( (s >> 8) & 0xff );
433 texel[BCOMP] = UBYTE_TO_FLOAT( (s ) & 0xff );
434 texel[ACOMP] = UBYTE_TO_FLOAT( (s >> 24) );
440 /* MESA_FORMAT_ARGB8888_REV **************************************************/
442 /* Fetch texel from 1D, 2D or 3D argb8888_rev texture, return 4 GLfloats */
443 static void FETCH(f_argb8888_rev)( const struct swrast_texture_image *texImage,
444 GLint i, GLint j, GLint k, GLfloat *texel )
446 const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
447 texel[RCOMP] = UBYTE_TO_FLOAT( (s >> 8) & 0xff );
448 texel[GCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );
449 texel[BCOMP] = UBYTE_TO_FLOAT( (s >> 24) );
450 texel[ACOMP] = UBYTE_TO_FLOAT( (s ) & 0xff );
456 /* MESA_FORMAT_RGBX8888 ******************************************************/
458 /* Fetch texel from 1D, 2D or 3D rgbx8888 texture, return 4 GLfloats */
459 static void FETCH(f_rgbx8888)( const struct swrast_texture_image *texImage,
460 GLint i, GLint j, GLint k, GLfloat *texel )
462 const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
463 texel[RCOMP] = UBYTE_TO_FLOAT( (s >> 24) );
464 texel[GCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );
465 texel[BCOMP] = UBYTE_TO_FLOAT( (s >> 8) & 0xff );
472 /* MESA_FORMAT_RGBX888_REV ***************************************************/
474 /* Fetch texel from 1D, 2D or 3D rgbx8888_rev texture, return 4 GLchans */
475 static void FETCH(f_rgbx8888_rev)( const struct swrast_texture_image *texImage,
476 GLint i, GLint j, GLint k, GLfloat *texel )
478 const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
479 texel[RCOMP] = UBYTE_TO_FLOAT( (s ) & 0xff );
480 texel[GCOMP] = UBYTE_TO_FLOAT( (s >> 8) & 0xff );
481 texel[BCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );
488 /* MESA_FORMAT_XRGB8888 ******************************************************/
490 /* Fetch texel from 1D, 2D or 3D xrgb8888 texture, return 4 GLchans */
491 static void FETCH(f_xrgb8888)( const struct swrast_texture_image *texImage,
492 GLint i, GLint j, GLint k, GLfloat *texel )
494 const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
495 texel[RCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );
496 texel[GCOMP] = UBYTE_TO_FLOAT( (s >> 8) & 0xff );
497 texel[BCOMP] = UBYTE_TO_FLOAT( (s ) & 0xff );
504 /* MESA_FORMAT_XRGB8888_REV **************************************************/
506 /* Fetch texel from 1D, 2D or 3D xrgb8888_rev texture, return 4 GLfloats */
507 static void FETCH(f_xrgb8888_rev)( const struct swrast_texture_image *texImage,
508 GLint i, GLint j, GLint k, GLfloat *texel )
510 const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
511 texel[RCOMP] = UBYTE_TO_FLOAT( (s >> 8) & 0xff );
512 texel[GCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );
513 texel[BCOMP] = UBYTE_TO_FLOAT( (s >> 24) );
520 /* MESA_FORMAT_RGB888 ********************************************************/
522 /* Fetch texel from 1D, 2D or 3D rgb888 texture, return 4 GLchans */
523 static void FETCH(f_rgb888)( const struct swrast_texture_image *texImage,
524 GLint i, GLint j, GLint k, GLfloat *texel )
526 const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 3);
527 texel[RCOMP] = UBYTE_TO_FLOAT( src[2] );
528 texel[GCOMP] = UBYTE_TO_FLOAT( src[1] );
529 texel[BCOMP] = UBYTE_TO_FLOAT( src[0] );
536 /* MESA_FORMAT_BGR888 ********************************************************/
538 /* Fetch texel from 1D, 2D or 3D bgr888 texture, return 4 GLchans */
539 static void FETCH(f_bgr888)( const struct swrast_texture_image *texImage,
540 GLint i, GLint j, GLint k, GLfloat *texel )
542 const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 3);
543 texel[RCOMP] = UBYTE_TO_FLOAT( src[0] );
544 texel[GCOMP] = UBYTE_TO_FLOAT( src[1] );
545 texel[BCOMP] = UBYTE_TO_FLOAT( src[2] );
552 /* use color expansion like (g << 2) | (g >> 4) (does somewhat random rounding)
553 instead of slow (g << 2) * 255 / 252 (always rounds down) */
555 /* MESA_FORMAT_RGB565 ********************************************************/
557 /* Fetch texel from 1D, 2D or 3D rgb565 texture, return 4 GLchans */
558 static void FETCH(f_rgb565)( const struct swrast_texture_image *texImage,
559 GLint i, GLint j, GLint k, GLfloat *texel )
561 const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
562 const GLushort s = *src;
563 texel[RCOMP] = ((s >> 11) & 0x1f) * (1.0F / 31.0F);
564 texel[GCOMP] = ((s >> 5 ) & 0x3f) * (1.0F / 63.0F);
565 texel[BCOMP] = ((s ) & 0x1f) * (1.0F / 31.0F);
572 /* MESA_FORMAT_RGB565_REV ****************************************************/
574 /* Fetch texel from 1D, 2D or 3D rgb565_rev texture, return 4 GLchans */
575 static void FETCH(f_rgb565_rev)( const struct swrast_texture_image *texImage,
576 GLint i, GLint j, GLint k, GLfloat *texel )
578 const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
579 const GLushort s = (*src >> 8) | (*src << 8); /* byte swap */
580 texel[RCOMP] = UBYTE_TO_FLOAT( ((s >> 8) & 0xf8) | ((s >> 13) & 0x7) );
581 texel[GCOMP] = UBYTE_TO_FLOAT( ((s >> 3) & 0xfc) | ((s >> 9) & 0x3) );
582 texel[BCOMP] = UBYTE_TO_FLOAT( ((s << 3) & 0xf8) | ((s >> 2) & 0x7) );
589 /* MESA_FORMAT_ARGB4444 ******************************************************/
591 /* Fetch texel from 1D, 2D or 3D argb444 texture, return 4 GLchans */
592 static void FETCH(f_argb4444)( const struct swrast_texture_image *texImage,
593 GLint i, GLint j, GLint k, GLfloat *texel )
595 const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
596 const GLushort s = *src;
597 texel[RCOMP] = ((s >> 8) & 0xf) * (1.0F / 15.0F);
598 texel[GCOMP] = ((s >> 4) & 0xf) * (1.0F / 15.0F);
599 texel[BCOMP] = ((s ) & 0xf) * (1.0F / 15.0F);
600 texel[ACOMP] = ((s >> 12) & 0xf) * (1.0F / 15.0F);
606 /* MESA_FORMAT_ARGB4444_REV **************************************************/
608 /* Fetch texel from 1D, 2D or 3D argb4444_rev texture, return 4 GLchans */
609 static void FETCH(f_argb4444_rev)( const struct swrast_texture_image *texImage,
610 GLint i, GLint j, GLint k, GLfloat *texel )
612 const GLushort s = *TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
613 texel[RCOMP] = ((s ) & 0xf) * (1.0F / 15.0F);
614 texel[GCOMP] = ((s >> 12) & 0xf) * (1.0F / 15.0F);
615 texel[BCOMP] = ((s >> 8) & 0xf) * (1.0F / 15.0F);
616 texel[ACOMP] = ((s >> 4) & 0xf) * (1.0F / 15.0F);
621 /* MESA_FORMAT_RGBA5551 ******************************************************/
623 /* Fetch texel from 1D, 2D or 3D argb1555 texture, return 4 GLchans */
624 static void FETCH(f_rgba5551)( const struct swrast_texture_image *texImage,
625 GLint i, GLint j, GLint k, GLfloat *texel )
627 const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
628 const GLushort s = *src;
629 texel[RCOMP] = ((s >> 11) & 0x1f) * (1.0F / 31.0F);
630 texel[GCOMP] = ((s >> 6) & 0x1f) * (1.0F / 31.0F);
631 texel[BCOMP] = ((s >> 1) & 0x1f) * (1.0F / 31.0F);
632 texel[ACOMP] = ((s ) & 0x01) * 1.0F;
637 /* MESA_FORMAT_ARGB1555 ******************************************************/
639 /* Fetch texel from 1D, 2D or 3D argb1555 texture, return 4 GLchans */
640 static void FETCH(f_argb1555)( const struct swrast_texture_image *texImage,
641 GLint i, GLint j, GLint k, GLfloat *texel )
643 const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
644 const GLushort s = *src;
645 texel[RCOMP] = ((s >> 10) & 0x1f) * (1.0F / 31.0F);
646 texel[GCOMP] = ((s >> 5) & 0x1f) * (1.0F / 31.0F);
647 texel[BCOMP] = ((s >> 0) & 0x1f) * (1.0F / 31.0F);
648 texel[ACOMP] = ((s >> 15) & 0x01) * 1.0F;
654 /* MESA_FORMAT_ARGB1555_REV **************************************************/
656 /* Fetch texel from 1D, 2D or 3D argb1555_rev texture, return 4 GLchans */
657 static void FETCH(f_argb1555_rev)( const struct swrast_texture_image *texImage,
658 GLint i, GLint j, GLint k, GLfloat *texel )
660 const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
661 const GLushort s = (*src << 8) | (*src >> 8); /* byteswap */
662 texel[RCOMP] = UBYTE_TO_FLOAT( ((s >> 7) & 0xf8) | ((s >> 12) & 0x7) );
663 texel[GCOMP] = UBYTE_TO_FLOAT( ((s >> 2) & 0xf8) | ((s >> 7) & 0x7) );
664 texel[BCOMP] = UBYTE_TO_FLOAT( ((s << 3) & 0xf8) | ((s >> 2) & 0x7) );
665 texel[ACOMP] = UBYTE_TO_FLOAT( ((s >> 15) & 0x01) * 255 );
671 /* MESA_FORMAT_ARGB2101010 ***************************************************/
673 /* Fetch texel from 1D, 2D or 3D argb2101010 texture, return 4 GLchans */
674 static void FETCH(f_argb2101010)( const struct swrast_texture_image *texImage,
675 GLint i, GLint j, GLint k, GLfloat *texel )
677 const GLuint *src = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
678 const GLuint s = *src;
679 texel[RCOMP] = ((s >> 20) & 0x3ff) * (1.0F / 1023.0F);
680 texel[GCOMP] = ((s >> 10) & 0x3ff) * (1.0F / 1023.0F);
681 texel[BCOMP] = ((s >> 0) & 0x3ff) * (1.0F / 1023.0F);
682 texel[ACOMP] = ((s >> 30) & 0x03) * (1.0F / 3.0F);
688 /* MESA_FORMAT_GR88 **********************************************************/
690 /* Fetch texel from 1D, 2D or 3D rg88 texture, return 4 GLchans */
691 static void FETCH(f_gr88)( const struct swrast_texture_image *texImage,
692 GLint i, GLint j, GLint k, GLfloat *texel )
694 const GLushort s = *TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
695 texel[RCOMP] = UBYTE_TO_FLOAT( s & 0xff );
696 texel[GCOMP] = UBYTE_TO_FLOAT( s >> 8 );
704 /* MESA_FORMAT_RG88 ******************************************************/
706 /* Fetch texel from 1D, 2D or 3D rg88_rev texture, return 4 GLchans */
707 static void FETCH(f_rg88)( const struct swrast_texture_image *texImage,
708 GLint i, GLint j, GLint k, GLfloat *texel )
710 const GLushort s = *TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
711 texel[RCOMP] = UBYTE_TO_FLOAT( s >> 8 );
712 texel[GCOMP] = UBYTE_TO_FLOAT( s & 0xff );
720 /* MESA_FORMAT_AL44 **********************************************************/
722 /* Fetch texel from 1D, 2D or 3D al44 texture, return 4 GLchans */
723 static void FETCH(f_al44)( const struct swrast_texture_image *texImage,
724 GLint i, GLint j, GLint k, GLfloat *texel )
726 const GLubyte s = *TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);
729 texel[BCOMP] = (s & 0xf) * (1.0F / 15.0F);
730 texel[ACOMP] = ((s >> 4) & 0xf) * (1.0F / 15.0F);
736 /* MESA_FORMAT_AL88 **********************************************************/
738 /* Fetch texel from 1D, 2D or 3D al88 texture, return 4 GLchans */
739 static void FETCH(f_al88)( const struct swrast_texture_image *texImage,
740 GLint i, GLint j, GLint k, GLfloat *texel )
742 const GLushort s = *TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
745 texel[BCOMP] = UBYTE_TO_FLOAT( s & 0xff );
746 texel[ACOMP] = UBYTE_TO_FLOAT( s >> 8 );
752 /* MESA_FORMAT_R8 ************************************************************/
754 /* Fetch texel from 1D, 2D or 3D rg88 texture, return 4 GLchans */
755 static void FETCH(f_r8)(const struct swrast_texture_image *texImage,
756 GLint i, GLint j, GLint k, GLfloat *texel)
758 const GLubyte s = *TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);
759 texel[RCOMP] = UBYTE_TO_FLOAT(s);
768 /* MESA_FORMAT_R16 ***********************************************************/
770 /* Fetch texel from 1D, 2D or 3D r16 texture, return 4 GLchans */
771 static void FETCH(f_r16)(const struct swrast_texture_image *texImage,
772 GLint i, GLint j, GLint k, GLfloat *texel)
774 const GLushort s = *TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
775 texel[RCOMP] = USHORT_TO_FLOAT(s);
784 /* MESA_FORMAT_AL88_REV ******************************************************/
786 /* Fetch texel from 1D, 2D or 3D al88_rev texture, return 4 GLchans */
787 static void FETCH(f_al88_rev)( const struct swrast_texture_image *texImage,
788 GLint i, GLint j, GLint k, GLfloat *texel )
790 const GLushort s = *TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
793 texel[BCOMP] = UBYTE_TO_FLOAT( s >> 8 );
794 texel[ACOMP] = UBYTE_TO_FLOAT( s & 0xff );
800 /* MESA_FORMAT_RG1616 ********************************************************/
802 /* Fetch texel from 1D, 2D or 3D rg1616 texture, return 4 GLchans */
803 static void FETCH(f_rg1616)( const struct swrast_texture_image *texImage,
804 GLint i, GLint j, GLint k, GLfloat *texel )
806 const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
807 texel[RCOMP] = USHORT_TO_FLOAT( s & 0xffff );
808 texel[GCOMP] = USHORT_TO_FLOAT( s >> 16 );
816 /* MESA_FORMAT_RG1616_REV ****************************************************/
818 /* Fetch texel from 1D, 2D or 3D rg1616_rev texture, return 4 GLchans */
819 static void FETCH(f_rg1616_rev)( const struct swrast_texture_image *texImage,
820 GLint i, GLint j, GLint k, GLfloat *texel )
822 const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
823 texel[RCOMP] = USHORT_TO_FLOAT( s >> 16 );
824 texel[GCOMP] = USHORT_TO_FLOAT( s & 0xffff );
832 /* MESA_FORMAT_AL1616 ********************************************************/
834 /* Fetch texel from 1D, 2D or 3D al1616 texture, return 4 GLchans */
835 static void FETCH(f_al1616)( const struct swrast_texture_image *texImage,
836 GLint i, GLint j, GLint k, GLfloat *texel )
838 const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
841 texel[BCOMP] = USHORT_TO_FLOAT( s & 0xffff );
842 texel[ACOMP] = USHORT_TO_FLOAT( s >> 16 );
848 /* MESA_FORMAT_AL1616_REV ****************************************************/
850 /* Fetch texel from 1D, 2D or 3D al1616_rev texture, return 4 GLchans */
851 static void FETCH(f_al1616_rev)( const struct swrast_texture_image *texImage,
852 GLint i, GLint j, GLint k, GLfloat *texel )
854 const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
857 texel[BCOMP] = USHORT_TO_FLOAT( s >> 16 );
858 texel[ACOMP] = USHORT_TO_FLOAT( s & 0xffff );
864 /* MESA_FORMAT_RGB332 ********************************************************/
866 /* Fetch texel from 1D, 2D or 3D rgb332 texture, return 4 GLchans */
867 static void FETCH(f_rgb332)( const struct swrast_texture_image *texImage,
868 GLint i, GLint j, GLint k, GLfloat *texel )
870 const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);
871 const GLubyte s = *src;
872 texel[RCOMP] = ((s >> 5) & 0x7) * (1.0F / 7.0F);
873 texel[GCOMP] = ((s >> 2) & 0x7) * (1.0F / 7.0F);
874 texel[BCOMP] = ((s ) & 0x3) * (1.0F / 3.0F);
881 /* MESA_FORMAT_A8 ************************************************************/
883 /* Fetch texel from 1D, 2D or 3D a8 texture, return 4 GLchans */
884 static void FETCH(f_a8)( const struct swrast_texture_image *texImage,
885 GLint i, GLint j, GLint k, GLfloat *texel )
887 const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);
891 texel[ACOMP] = UBYTE_TO_FLOAT( src[0] );
897 /* MESA_FORMAT_A16 ************************************************************/
899 /* Fetch texel from 1D, 2D or 3D a8 texture, return 4 GLchans */
900 static void FETCH(f_a16)( const struct swrast_texture_image *texImage,
901 GLint i, GLint j, GLint k, GLfloat *texel )
903 const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
907 texel[ACOMP] = USHORT_TO_FLOAT( src[0] );
913 /* MESA_FORMAT_L8 ************************************************************/
915 /* Fetch texel from 1D, 2D or 3D l8 texture, return 4 GLchans */
916 static void FETCH(f_l8)( const struct swrast_texture_image *texImage,
917 GLint i, GLint j, GLint k, GLfloat *texel )
919 const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);
922 texel[BCOMP] = UBYTE_TO_FLOAT( src[0] );
929 /* MESA_FORMAT_L16 ***********************************************************/
931 /* Fetch texel from 1D, 2D or 3D l16 texture, return 4 GLchans */
932 static void FETCH(f_l16)( const struct swrast_texture_image *texImage,
933 GLint i, GLint j, GLint k, GLfloat *texel )
935 const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
938 texel[BCOMP] = USHORT_TO_FLOAT( src[0] );
945 /* MESA_FORMAT_I8 ************************************************************/
947 /* Fetch texel from 1D, 2D or 3D i8 texture, return 4 GLchans */
948 static void FETCH(f_i8)( const struct swrast_texture_image *texImage,
949 GLint i, GLint j, GLint k, GLfloat *texel )
951 const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);
955 texel[ACOMP] = UBYTE_TO_FLOAT( src[0] );
961 /* MESA_FORMAT_I16 ***********************************************************/
963 /* Fetch texel from 1D, 2D or 3D i16 texture, return 4 GLchans */
964 static void FETCH(f_i16)( const struct swrast_texture_image *texImage,
965 GLint i, GLint j, GLint k, GLfloat *texel )
967 const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
971 texel[ACOMP] = USHORT_TO_FLOAT( src[0] );
977 /* Fetch texel from 1D, 2D or 3D srgb8 texture, return 4 GLfloats */
978 /* Note: component order is same as for MESA_FORMAT_RGB888 */
979 static void FETCH(srgb8)(const struct swrast_texture_image *texImage,
980 GLint i, GLint j, GLint k, GLfloat *texel )
982 const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 3);
983 texel[RCOMP] = nonlinear_to_linear(src[2]);
984 texel[GCOMP] = nonlinear_to_linear(src[1]);
985 texel[BCOMP] = nonlinear_to_linear(src[0]);
991 /* Fetch texel from 1D, 2D or 3D srgba8 texture, return 4 GLfloats */
992 static void FETCH(srgba8)(const struct swrast_texture_image *texImage,
993 GLint i, GLint j, GLint k, GLfloat *texel )
995 const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
996 texel[RCOMP] = nonlinear_to_linear( (s >> 24) );
997 texel[GCOMP] = nonlinear_to_linear( (s >> 16) & 0xff );
998 texel[BCOMP] = nonlinear_to_linear( (s >> 8) & 0xff );
999 texel[ACOMP] = UBYTE_TO_FLOAT( (s ) & 0xff ); /* linear! */
1004 /* Fetch texel from 1D, 2D or 3D sargb8 texture, return 4 GLfloats */
1005 static void FETCH(sargb8)(const struct swrast_texture_image *texImage,
1006 GLint i, GLint j, GLint k, GLfloat *texel )
1008 const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
1009 texel[RCOMP] = nonlinear_to_linear( (s >> 16) & 0xff );
1010 texel[GCOMP] = nonlinear_to_linear( (s >> 8) & 0xff );
1011 texel[BCOMP] = nonlinear_to_linear( (s ) & 0xff );
1012 texel[ACOMP] = UBYTE_TO_FLOAT( (s >> 24) ); /* linear! */
1017 /* Fetch texel from 1D, 2D or 3D sl8 texture, return 4 GLfloats */
1018 static void FETCH(sl8)(const struct swrast_texture_image *texImage,
1019 GLint i, GLint j, GLint k, GLfloat *texel )
1021 const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);
1024 texel[BCOMP] = nonlinear_to_linear(src[0]);
1025 texel[ACOMP] = 1.0F;
1030 /* Fetch texel from 1D, 2D or 3D sla8 texture, return 4 GLfloats */
1031 static void FETCH(sla8)(const struct swrast_texture_image *texImage,
1032 GLint i, GLint j, GLint k, GLfloat *texel )
1034 const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 2);
1037 texel[BCOMP] = nonlinear_to_linear(src[0]);
1038 texel[ACOMP] = UBYTE_TO_FLOAT(src[1]); /* linear */
1044 /* MESA_FORMAT_RGBA_INT8 **************************************************/
1047 FETCH(rgba_int8)(const struct swrast_texture_image *texImage,
1048 GLint i, GLint j, GLint k, GLfloat *texel )
1050 const GLbyte *src = TEXEL_ADDR(GLbyte, texImage, i, j, k, 4);
1051 texel[RCOMP] = (GLfloat) src[0];
1052 texel[GCOMP] = (GLfloat) src[1];
1053 texel[BCOMP] = (GLfloat) src[2];
1054 texel[ACOMP] = (GLfloat) src[3];
1060 /* MESA_FORMAT_RGBA_INT16 **************************************************/
1063 FETCH(rgba_int16)(const struct swrast_texture_image *texImage,
1064 GLint i, GLint j, GLint k, GLfloat *texel )
1066 const GLshort *src = TEXEL_ADDR(GLshort, texImage, i, j, k, 4);
1067 texel[RCOMP] = (GLfloat) src[0];
1068 texel[GCOMP] = (GLfloat) src[1];
1069 texel[BCOMP] = (GLfloat) src[2];
1070 texel[ACOMP] = (GLfloat) src[3];
1076 /* MESA_FORMAT_RGBA_INT32 **************************************************/
1079 FETCH(rgba_int32)(const struct swrast_texture_image *texImage,
1080 GLint i, GLint j, GLint k, GLfloat *texel )
1082 const GLint *src = TEXEL_ADDR(GLint, texImage, i, j, k, 4);
1083 texel[RCOMP] = (GLfloat) src[0];
1084 texel[GCOMP] = (GLfloat) src[1];
1085 texel[BCOMP] = (GLfloat) src[2];
1086 texel[ACOMP] = (GLfloat) src[3];
1092 /* MESA_FORMAT_RGBA_UINT8 **************************************************/
1095 FETCH(rgba_uint8)(const struct swrast_texture_image *texImage,
1096 GLint i, GLint j, GLint k, GLfloat *texel )
1098 const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 4);
1099 texel[RCOMP] = (GLfloat) src[0];
1100 texel[GCOMP] = (GLfloat) src[1];
1101 texel[BCOMP] = (GLfloat) src[2];
1102 texel[ACOMP] = (GLfloat) src[3];
1108 /* MESA_FORMAT_RGBA_UINT16 **************************************************/
1111 FETCH(rgba_uint16)(const struct swrast_texture_image *texImage,
1112 GLint i, GLint j, GLint k, GLfloat *texel )
1114 const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 4);
1115 texel[RCOMP] = (GLfloat) src[0];
1116 texel[GCOMP] = (GLfloat) src[1];
1117 texel[BCOMP] = (GLfloat) src[2];
1118 texel[ACOMP] = (GLfloat) src[3];
1124 /* MESA_FORMAT_RGBA_UINT32 **************************************************/
1127 FETCH(rgba_uint32)(const struct swrast_texture_image *texImage,
1128 GLint i, GLint j, GLint k, GLfloat *texel )
1130 const GLuint *src = TEXEL_ADDR(GLuint, texImage, i, j, k, 4);
1131 texel[RCOMP] = (GLfloat) src[0];
1132 texel[GCOMP] = (GLfloat) src[1];
1133 texel[BCOMP] = (GLfloat) src[2];
1134 texel[ACOMP] = (GLfloat) src[3];
1140 /* MESA_FORMAT_DUDV8 ********************************************************/
1142 /* this format by definition produces 0,0,0,1 as rgba values,
1143 however we'll return the dudv values as rg and fix up elsewhere */
1144 static void FETCH(dudv8)(const struct swrast_texture_image *texImage,
1145 GLint i, GLint j, GLint k, GLfloat *texel )
1147 const GLbyte *src = TEXEL_ADDR(GLbyte, texImage, i, j, k, 2);
1148 texel[RCOMP] = BYTE_TO_FLOAT(src[0]);
1149 texel[GCOMP] = BYTE_TO_FLOAT(src[1]);
1155 /* MESA_FORMAT_SIGNED_R8 ***********************************************/
1157 static void FETCH(signed_r8)( const struct swrast_texture_image *texImage,
1158 GLint i, GLint j, GLint k, GLfloat *texel )
1160 const GLbyte s = *TEXEL_ADDR(GLbyte, texImage, i, j, k, 1);
1161 texel[RCOMP] = BYTE_TO_FLOAT_TEX( s );
1162 texel[GCOMP] = 0.0F;
1163 texel[BCOMP] = 0.0F;
1164 texel[ACOMP] = 1.0F;
1170 /* MESA_FORMAT_SIGNED_A8 ***********************************************/
1172 static void FETCH(signed_a8)( const struct swrast_texture_image *texImage,
1173 GLint i, GLint j, GLint k, GLfloat *texel )
1175 const GLbyte s = *TEXEL_ADDR(GLbyte, texImage, i, j, k, 1);
1176 texel[RCOMP] = 0.0F;
1177 texel[GCOMP] = 0.0F;
1178 texel[BCOMP] = 0.0F;
1179 texel[ACOMP] = BYTE_TO_FLOAT_TEX( s );
1185 /* MESA_FORMAT_SIGNED_L8 ***********************************************/
1187 static void FETCH(signed_l8)( const struct swrast_texture_image *texImage,
1188 GLint i, GLint j, GLint k, GLfloat *texel )
1190 const GLbyte s = *TEXEL_ADDR(GLbyte, texImage, i, j, k, 1);
1193 texel[BCOMP] = BYTE_TO_FLOAT_TEX( s );
1194 texel[ACOMP] = 1.0F;
1200 /* MESA_FORMAT_SIGNED_I8 ***********************************************/
1202 static void FETCH(signed_i8)( const struct swrast_texture_image *texImage,
1203 GLint i, GLint j, GLint k, GLfloat *texel )
1205 const GLbyte s = *TEXEL_ADDR(GLbyte, texImage, i, j, k, 1);
1209 texel[ACOMP] = BYTE_TO_FLOAT_TEX( s );
1215 /* MESA_FORMAT_SIGNED_RG88_REV ***********************************************/
1217 static void FETCH(signed_rg88_rev)( const struct swrast_texture_image *texImage,
1218 GLint i, GLint j, GLint k, GLfloat *texel )
1220 const GLushort s = *TEXEL_ADDR(GLshort, texImage, i, j, k, 1);
1221 texel[RCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s & 0xff) );
1222 texel[GCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 8) );
1223 texel[BCOMP] = 0.0F;
1224 texel[ACOMP] = 1.0F;
1230 /* MESA_FORMAT_SIGNED_AL88 ***********************************************/
1232 static void FETCH(signed_al88)( const struct swrast_texture_image *texImage,
1233 GLint i, GLint j, GLint k, GLfloat *texel )
1235 const GLushort s = *TEXEL_ADDR(GLshort, texImage, i, j, k, 1);
1238 texel[BCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s & 0xff) );
1239 texel[ACOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 8) );
1245 /* MESA_FORMAT_SIGNED_RGBX8888 ***********************************************/
1247 static void FETCH(signed_rgbx8888)( const struct swrast_texture_image *texImage,
1248 GLint i, GLint j, GLint k, GLfloat *texel )
1250 const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
1251 texel[RCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 24) );
1252 texel[GCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 16) );
1253 texel[BCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 8) );
1254 texel[ACOMP] = 1.0f;
1260 /* MESA_FORMAT_SIGNED_RGBA8888 ***********************************************/
1262 static void FETCH(signed_rgba8888)( const struct swrast_texture_image *texImage,
1263 GLint i, GLint j, GLint k, GLfloat *texel )
1265 const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
1266 texel[RCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 24) );
1267 texel[GCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 16) );
1268 texel[BCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 8) );
1269 texel[ACOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s ) );
1274 static void FETCH(signed_rgba8888_rev)( const struct swrast_texture_image *texImage,
1275 GLint i, GLint j, GLint k, GLfloat *texel )
1277 const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
1278 texel[RCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s ) );
1279 texel[GCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 8) );
1280 texel[BCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 16) );
1281 texel[ACOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 24) );
1288 /* MESA_FORMAT_SIGNED_R16 ***********************************************/
1291 FETCH(signed_r16)(const struct swrast_texture_image *texImage,
1292 GLint i, GLint j, GLint k, GLfloat *texel)
1294 const GLshort s = *TEXEL_ADDR(GLshort, texImage, i, j, k, 1);
1295 texel[RCOMP] = SHORT_TO_FLOAT_TEX( s );
1296 texel[GCOMP] = 0.0F;
1297 texel[BCOMP] = 0.0F;
1298 texel[ACOMP] = 1.0F;
1304 /* MESA_FORMAT_SIGNED_A16 ***********************************************/
1307 FETCH(signed_a16)(const struct swrast_texture_image *texImage,
1308 GLint i, GLint j, GLint k, GLfloat *texel)
1310 const GLshort s = *TEXEL_ADDR(GLshort, texImage, i, j, k, 1);
1311 texel[RCOMP] = 0.0F;
1312 texel[GCOMP] = 0.0F;
1313 texel[BCOMP] = 0.0F;
1314 texel[ACOMP] = SHORT_TO_FLOAT_TEX( s );
1320 /* MESA_FORMAT_SIGNED_L16 ***********************************************/
1323 FETCH(signed_l16)(const struct swrast_texture_image *texImage,
1324 GLint i, GLint j, GLint k, GLfloat *texel)
1326 const GLshort s = *TEXEL_ADDR(GLshort, texImage, i, j, k, 1);
1329 texel[BCOMP] = SHORT_TO_FLOAT_TEX( s );
1330 texel[ACOMP] = 1.0F;
1336 /* MESA_FORMAT_SIGNED_I16 ***********************************************/
1339 FETCH(signed_i16)(const struct swrast_texture_image *texImage,
1340 GLint i, GLint j, GLint k, GLfloat *texel)
1342 const GLshort s = *TEXEL_ADDR(GLshort, texImage, i, j, k, 1);
1346 texel[ACOMP] = SHORT_TO_FLOAT_TEX( s );
1352 /* MESA_FORMAT_SIGNED_RG1616 ***********************************************/
1355 FETCH(signed_rg1616)(const struct swrast_texture_image *texImage,
1356 GLint i, GLint j, GLint k, GLfloat *texel)
1358 const GLshort *s = TEXEL_ADDR(GLshort, texImage, i, j, k, 2);
1359 texel[RCOMP] = SHORT_TO_FLOAT_TEX( s[0] );
1360 texel[GCOMP] = SHORT_TO_FLOAT_TEX( s[1] );
1361 texel[BCOMP] = 0.0F;
1362 texel[ACOMP] = 1.0F;
1368 /* MESA_FORMAT_SIGNED_AL1616 ***********************************************/
1371 FETCH(signed_al1616)(const struct swrast_texture_image *texImage,
1372 GLint i, GLint j, GLint k, GLfloat *texel)
1374 const GLshort *s = TEXEL_ADDR(GLshort, texImage, i, j, k, 2);
1377 texel[BCOMP] = SHORT_TO_FLOAT_TEX( s[0] );
1378 texel[ACOMP] = SHORT_TO_FLOAT_TEX( s[1] );
1384 /* MESA_FORMAT_SIGNED_RGB_16 ***********************************************/
1387 FETCH(signed_rgb_16)(const struct swrast_texture_image *texImage,
1388 GLint i, GLint j, GLint k, GLfloat *texel)
1390 const GLshort *s = TEXEL_ADDR(GLshort, texImage, i, j, k, 3);
1391 texel[RCOMP] = SHORT_TO_FLOAT_TEX( s[0] );
1392 texel[GCOMP] = SHORT_TO_FLOAT_TEX( s[1] );
1393 texel[BCOMP] = SHORT_TO_FLOAT_TEX( s[2] );
1394 texel[ACOMP] = 1.0F;
1400 /* MESA_FORMAT_SIGNED_RGBA_16 ***********************************************/
1403 FETCH(signed_rgba_16)(const struct swrast_texture_image *texImage,
1404 GLint i, GLint j, GLint k, GLfloat *texel)
1406 const GLshort *s = TEXEL_ADDR(GLshort, texImage, i, j, k, 4);
1407 texel[RCOMP] = SHORT_TO_FLOAT_TEX( s[0] );
1408 texel[GCOMP] = SHORT_TO_FLOAT_TEX( s[1] );
1409 texel[BCOMP] = SHORT_TO_FLOAT_TEX( s[2] );
1410 texel[ACOMP] = SHORT_TO_FLOAT_TEX( s[3] );
1417 /* MESA_FORMAT_RGBA_16 ***********************************************/
1420 FETCH(rgba_16)(const struct swrast_texture_image *texImage,
1421 GLint i, GLint j, GLint k, GLfloat *texel)
1423 const GLushort *s = TEXEL_ADDR(GLushort, texImage, i, j, k, 4);
1424 texel[RCOMP] = USHORT_TO_FLOAT( s[0] );
1425 texel[GCOMP] = USHORT_TO_FLOAT( s[1] );
1426 texel[BCOMP] = USHORT_TO_FLOAT( s[2] );
1427 texel[ACOMP] = USHORT_TO_FLOAT( s[3] );
1434 /* MESA_FORMAT_YCBCR *********************************************************/
1436 /* Fetch texel from 1D, 2D or 3D ycbcr texture, return 4 GLfloats.
1437 * We convert YCbCr to RGB here.
1439 static void FETCH(f_ycbcr)( const struct swrast_texture_image *texImage,
1440 GLint i, GLint j, GLint k, GLfloat *texel )
1442 const GLushort *src0 = TEXEL_ADDR(GLushort, texImage, (i & ~1), j, k, 1); /* even */
1443 const GLushort *src1 = src0 + 1; /* odd */
1444 const GLubyte y0 = (*src0 >> 8) & 0xff; /* luminance */
1445 const GLubyte cb = *src0 & 0xff; /* chroma U */
1446 const GLubyte y1 = (*src1 >> 8) & 0xff; /* luminance */
1447 const GLubyte cr = *src1 & 0xff; /* chroma V */
1448 const GLubyte y = (i & 1) ? y1 : y0; /* choose even/odd luminance */
1449 GLfloat r = 1.164F * (y - 16) + 1.596F * (cr - 128);
1450 GLfloat g = 1.164F * (y - 16) - 0.813F * (cr - 128) - 0.391F * (cb - 128);
1451 GLfloat b = 1.164F * (y - 16) + 2.018F * (cb - 128);
1452 r *= (1.0F / 255.0F);
1453 g *= (1.0F / 255.0F);
1454 b *= (1.0F / 255.0F);
1455 texel[RCOMP] = CLAMP(r, 0.0F, 1.0F);
1456 texel[GCOMP] = CLAMP(g, 0.0F, 1.0F);
1457 texel[BCOMP] = CLAMP(b, 0.0F, 1.0F);
1458 texel[ACOMP] = 1.0F;
1464 /* MESA_FORMAT_YCBCR_REV *****************************************************/
1466 /* Fetch texel from 1D, 2D or 3D ycbcr_rev texture, return 4 GLfloats.
1467 * We convert YCbCr to RGB here.
1469 static void FETCH(f_ycbcr_rev)( const struct swrast_texture_image *texImage,
1470 GLint i, GLint j, GLint k, GLfloat *texel )
1472 const GLushort *src0 = TEXEL_ADDR(GLushort, texImage, (i & ~1), j, k, 1); /* even */
1473 const GLushort *src1 = src0 + 1; /* odd */
1474 const GLubyte y0 = *src0 & 0xff; /* luminance */
1475 const GLubyte cr = (*src0 >> 8) & 0xff; /* chroma V */
1476 const GLubyte y1 = *src1 & 0xff; /* luminance */
1477 const GLubyte cb = (*src1 >> 8) & 0xff; /* chroma U */
1478 const GLubyte y = (i & 1) ? y1 : y0; /* choose even/odd luminance */
1479 GLfloat r = 1.164F * (y - 16) + 1.596F * (cr - 128);
1480 GLfloat g = 1.164F * (y - 16) - 0.813F * (cr - 128) - 0.391F * (cb - 128);
1481 GLfloat b = 1.164F * (y - 16) + 2.018F * (cb - 128);
1482 r *= (1.0F / 255.0F);
1483 g *= (1.0F / 255.0F);
1484 b *= (1.0F / 255.0F);
1485 texel[RCOMP] = CLAMP(r, 0.0F, 1.0F);
1486 texel[GCOMP] = CLAMP(g, 0.0F, 1.0F);
1487 texel[BCOMP] = CLAMP(b, 0.0F, 1.0F);
1488 texel[ACOMP] = 1.0F;
1494 /* MESA_TEXFORMAT_Z24_S8 ***************************************************/
1496 static void FETCH(f_z24_s8)( const struct swrast_texture_image *texImage,
1497 GLint i, GLint j, GLint k, GLfloat *texel )
1499 /* only return Z, not stencil data */
1500 const GLuint *src = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
1501 const GLdouble scale = 1.0 / (GLdouble) 0xffffff;
1502 texel[0] = ((*src) >> 8) * scale;
1503 ASSERT(texImage->Base.TexFormat == MESA_FORMAT_Z24_S8 ||
1504 texImage->Base.TexFormat == MESA_FORMAT_Z24_X8);
1505 ASSERT(texel[0] >= 0.0F);
1506 ASSERT(texel[0] <= 1.0F);
1512 /* MESA_TEXFORMAT_S8_Z24 ***************************************************/
1514 static void FETCH(f_s8_z24)( const struct swrast_texture_image *texImage,
1515 GLint i, GLint j, GLint k, GLfloat *texel )
1517 /* only return Z, not stencil data */
1518 const GLuint *src = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
1519 const GLdouble scale = 1.0 / (GLdouble) 0xffffff;
1520 texel[0] = ((*src) & 0x00ffffff) * scale;
1521 ASSERT(texImage->Base.TexFormat == MESA_FORMAT_S8_Z24 ||
1522 texImage->Base.TexFormat == MESA_FORMAT_X8_Z24);
1523 ASSERT(texel[0] >= 0.0F);
1524 ASSERT(texel[0] <= 1.0F);
1530 /* MESA_FORMAT_RGB9_E5 ******************************************************/
1532 static void FETCH(rgb9_e5)( const struct swrast_texture_image *texImage,
1533 GLint i, GLint j, GLint k, GLfloat *texel )
1535 const GLuint *src = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
1536 rgb9e5_to_float3(*src, texel);
1537 texel[ACOMP] = 1.0F;
1543 /* MESA_FORMAT_R11_G11_B10_FLOAT *********************************************/
1545 static void FETCH(r11_g11_b10f)( const struct swrast_texture_image *texImage,
1546 GLint i, GLint j, GLint k, GLfloat *texel )
1548 const GLuint *src = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
1549 r11g11b10f_to_float3(*src, texel);
1550 texel[ACOMP] = 1.0F;
1556 /* MESA_FORMAT_Z32_FLOAT_X24S8 ***********************************************/
1558 static void FETCH(z32f_x24s8)(const struct swrast_texture_image *texImage,
1559 GLint i, GLint j, GLint k, GLfloat *texel)
1561 const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 2);
1562 texel[RCOMP] = src[0];
1563 texel[GCOMP] = 0.0F;
1564 texel[BCOMP] = 0.0F;
1565 texel[ACOMP] = 1.0F;